物联网架构成长之路(18)-接阿里云OSS服务

Posted 2020-10-24 无脑仔的小明

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1.申请/购买OSS服务

　　在阿里云上申请/购买OSS服务, 然后在会得AccessKeyID,AccessKeySecret,bucketName 这三个东西

2.增删改查

　　在pom.xml文件上增加

1 <!-- https://mvnrepository.com/artifact/com.aliyun.oss/aliyun-sdk-oss -->
2 <dependency>
3     <groupId>com.aliyun.oss</groupId>
4     <artifactId>aliyun-sdk-oss</artifactId>
5     <version>3.0.0</version>
6 </dependency>

　　上传/下载代码

 1 public class OSSUploadFile {
 2     public static String endpoint = "http://oss-cn-shenzhen.aliyuncs.com";
 3     public static String accessKeyId = "L*****************";
 4     public static String accessKeySecret = "4********************c";
 5     public static String bucketName = "io****e";
 6     
 7     /**
 8      * 上传文件到阿里云OSS
 9      * @param file 本地文件对象
10      * @param key oss对于url
11      * @return
12      */
13     public static boolean uploadFile(File file, String key) {
14         OSS client = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
15         try {
16             client.putObject(new PutObjectRequest(bucketName, key, file));
17             client.setObjectAcl(bucketName, key, CannedAccessControlList.PublicRead);
18             client.setObjectAcl(bucketName, key, CannedAccessControlList.Default);
19             return true;
20         } catch (Exception e) {
21             e.printStackTrace();
22         }
23         return false;
24     }
25     /**
26      * 删除阿里云OSS上文件
27      * @param key
28      * @return
29      */
30     public static boolean deleteFile(String key) {
31         try {
32             OSS client = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
33             boolean exists = client.doesObjectExist(bucketName, key);
34             if(exists) {
35                 client.deleteObject(bucketName, key);           
36             }
37             return true;
38         } catch (Exception e) {
39             e.printStackTrace();
40         }
41         return false;
42     }
43 }